Quantum amplifiers, quantum duplicators and quantum cryptography
- 1 August 1996
- journal article
- Published by IOP Publishing in Quantum and Semiclassical Optics: Journal of the European Optical Society Part B
- Vol. 8 (4) , 939-949
- https://doi.org/10.1088/1355-5111/8/4/015
Abstract
Several methods for eavesdropping on the standard four coherent-state quantum cryptosystem together with a possible countermeasure are analysed and found to place a limit on the tolerable energy disadvantage of the users as compared to the eavesdropper. The possible significant role of the photon-number amplifier and the photon-number duplicator is indicated.Keywords
This publication has 17 references indexed in Scilit:
- Quantum cryptography with coherent statesPhysical Review A, 1995
- Detection of the density matrix through optical homodyne tomography without filtered back projectionPhysical Review A, 1994
- Secure key distribution system based on quantumcryptographyElectronics Letters, 1994
- Enhanced single photon fringe visibility in a 10 km-long prototype quantum cryptography channelElectronics Letters, 1993
- Quantum cryptography without conjugate codingPhysical Review A, 1993
- Single photon interference in 10 km long optical fibre interferometerElectronics Letters, 1993
- Quantum CryptographyScientific American, 1992
- Quantum cryptography using any two nonorthogonal statesPhysical Review Letters, 1992
- Experimental quantum cryptographyJournal of Cryptology, 1992
- Optical communication with two-photon coherent states--Part III: Quantum measurements realizable with photoemissive detectorsIEEE Transactions on Information Theory, 1980